Got notification in app for new cashback rewards (check your notification for your awards as these are targeted and your rewards could be different). Valid in-store or online and on Credit or Debit cards (select "credit" option if using Debit card in-store)
JB HiFi $10 cashback on $50 purchase (valid till 24 Dec)
Myer $20 cashback on $100 (valid till 24 Dec) - for a similar AMEX offer, the cashback worked on purchase of Coles/Myer giftcard though I haven't tried with CommBank card
Booktopia $10 cashback on $30 - this is the only one which has fancy T&C of excluding voucher codes, gift cards, cashbacks and coupon deals. 31 Dec.
New way to access in updated app (if you are unable to use notifications)-
Log onto the CommBank App
Go to For you
Select Commbank Rewards
Activate rewards
Enjoy shopping :) Might take 2-4 days for cashback amount credited to your account
yep i bought a lego set online. just factor in shipping fee which was $7.95. not sure if CBA counts delivery fees in total spend (most probably yes).